Phrase or Clause

Sally glanced at the clock on the night table and saw it was quarter past two in the morning.

Charlie shouldn't be here; he should be on a shift.

Then she got her first good look at him and something leaped inside her, some deadly intuiton.

Then she got her first good look at him and something leaped inside her, some deadly intuiton.

He was using his other hand to shake her awake, although her eyes were wide open.

How do you feel about your ability to differentiate between a phrase and a clause?